Drying device

Abstract

The utility model relates to a drying device which comprises a drying room, a hot air conveying header pipe and a hot air return pipe are arranged on the drying room, and a first fan, a first online chromatograph, a first temperature sensor, a first hot air conveying branch pipe and a first heat exchanger are arranged on the hot air return pipe. The hot air conveying header pipe is provided with a second fan, a second temperature sensor, an electric heater and an air mixer, the first heat exchanger is communicated with a first air conveying pipe, the first air conveying pipe is provided with a self-cleaning air filter, the air mixer comprises a first tank body, an air supply branch pipe, an air guide cone and a spiral blade, and the first tank body is communicated with the hot air return pipe. The air supply branch pipe is communicated with the first heat exchanger, the first tank body is communicated with the first hot air conveying branch pipe, and the hot air conveying header pipe, the first hot air conveying branch pipe and the first air conveying pipe are each provided with a first adjusting valve. And the heat energy carried in the tail gas continuously released outwards is reasonably utilized. The utility model has the advantages of convenient use and wide market prospect.

Description

Technical Field

[0001] The utility model relates to the field of drying equipment, in particular to a drying device. Background Art

[0002] The diluents used in the spray production process contain toxic components such as benzene, toluene, xylene, ketones, and esters. They are volatile and will gradually evaporate during the spraying, drying, and drying process to form organic waste gas that is released into the air. After the component has completed the painting process, it needs to be dried so that the spray coating gradually solidifies and adheres to the component. During the gradual solidification of the spray coating, the diluent gradually solidifies, and a large amount of diluent is converted into gas and released into the surrounding air. This part of diluent accounts for 35% to 42% of the total paint usage.

[0003] From the perspective of energy saving, the use of hot air circulation is more scientific for coating processing. The reason is that the airflow carries heat to form a cycle and continuously carries away the waste gas converted by the diluent due to heat, thereby avoiding the excessive content of organic waste gas in the air near the dried component, which affects the dried component's continuous release of waste gas formed by the vaporization of the diluent due to heat. However, excessive organic waste gas in the circulating airflow will still affect the rate of diluent vaporization. Therefore, the content of organic components in the circulating airflow should meet a certain range requirement to maintain the rate of vaporization of the diluent due to heat. In the prior art, the circulating airflow is achieved by continuously releasing a part of the circulating airflow to the outside world and accepting the same volume of fresh air so that the content of organic components in the circulating airflow is always kept within a certain range. The fresh air introduced into the circulating airflow and participating in the circulation of the circulating airflow still needs to be heated in order to maintain the temperature parameters of the circulating airflow within an appropriate range.

[0004] In the existing technology, most of the exhaust gas treatment methods used are adsorption-desorption catalytic combustion methods. The adsorption-desorption catalytic combustion method is divided into two stages. The first stage is to use activated carbon or zeolite molecular sieves to continuously absorb the organic components in the exhaust gas; the second stage is to use high-temperature gas to decompose the organic components adsorbed in the activated carbon or zeolite molecular sieves and send them into the catalytic combustion furnace for catalytic combustion. Because part of the gas continuously released outward by the circulating airflow after the coating is cured contains a high amount of heat, this part of the gas needs to be cooled before the organic components in this part of the gas can be absorbed by activated carbon or zeolite molecular sieves. Therefore, there is room for improvement in the process of using the circulating airflow to cure the coating and continuously discharge qualified exhaust gas to the outside. The energy carried by the exhaust gas continuously released to the outside should be reasonably utilized to reduce the energy consumption required for the overall circulating airflow to dry the coating, so as to reduce the energy cost required for the company to operate the equipment. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the utility model provides a drying device that can rationally utilize the heat energy carried by the exhaust gas to continuously release it outward, thereby reducing the energy required for the overall circulating airflow to dry the coating, so as to overcome the defects in the existing technology.

[0006] The technical solution adopted by the utility model is as follows: a drying device, comprising a drying room, wherein the drying room is provided with a hot air delivery main pipe and a hot air return pipe, the hot air return pipe is provided with a first fan, a first online chromatograph, a first temperature sensor, an inlet end of a first hot air delivery branch pipe and an inlet end of a first heat exchanger heat source channel in sequence along the direction from close to the drying room to far away from the drying room, the hot air delivery main pipe is provided with a second fan, a second temperature sensor, an electric heater and an air mixer in sequence along the direction from close to the drying room to far away from the drying room, the inlet end of the first heat exchanger cold source channel is connected to the first air delivery main pipe, and the hot air return pipe is provided with a ... The air supply pipe is provided with a self-cleaning air filter on the first air supply pipe. The air mixer includes a first tank body and an air supply branch pipe, an air guide cone and a spiral blade arranged in sequence in the first tank body along the direction from the inlet end of the first tank body to the outlet end of the first tank body. The outlet end of the first tank body is connected to the hot air return pipe, the air supply branch pipe is connected to the cold source channel of the first heat exchanger, the inlet end of the first tank body is connected to the outlet end of the first hot air delivery branch pipe, and the hot air delivery main pipe between the first hot air delivery branch pipe and the first heat exchanger, the first hot air delivery branch pipe and the first air delivery pipe are respectively provided with a first regulating valve.

[0007] Preferably, the heat source channel of the first heat exchanger is connected to the inlet end of the heat source channel of the second heat exchanger, the outlet end of the heat source channel of the second heat exchanger is connected to the inlet end of the activated carbon adsorption tank, the outlet end of the activated carbon adsorption tank is connected to the first exhaust gas delivery pipe, and the first exhaust gas delivery pipe is provided with a second online chromatograph.

[0008] Preferably, the number of the activated carbon adsorption tanks is several, and the inlet end of each activated carbon adsorption tank is respectively provided with the inlet end of the first desorption gas delivery branch pipe, the outlet ends of several first desorption gas delivery branches are provided with second tail gas delivery pipes, and the second tail gas delivery pipe is provided with a third online chromatograph, the inlet end of each activated carbon adsorption tank is respectively provided with the outlet end of the second desorption gas delivery branch pipe, and the inlet ends of several second desorption gas delivery branches are provided with the outlet end of the third desorption gas delivery branch, the inlet end of each activated carbon adsorption tank and the outlet end of the heat source channel of the second heat exchanger are respectively provided with a first adsorption gas delivery pipe, a second adsorption gas delivery pipe is respectively provided between the outlet end of each activated carbon adsorption tank and the inlet end of the first tail gas delivery pipe, and the first desorption gas delivery branch, the second desorption gas delivery branch, the third desorption gas delivery branch, the first adsorption gas delivery pipe, and the second adsorption gas delivery pipe are respectively provided with a first stop valve.

[0009] Preferably, a second stop valve is provided on the hot air delivery main pipe between the drying room and the second fan, the second stop valve is connected to the hot air delivery main pipe between the second fan and the inlet end of the third desorption gas delivery branch pipe, and a one-way valve is provided on the first hot air delivery branch pipe.

[0010] Preferably, the drying room is symmetrically provided with two through cavities, and the drying rooms outside the two through cavities are respectively hinged with revolving doors, each revolving door and the drying room are respectively provided with a driving cylinder, and guide rails are provided in the two through cavities, and the drying rooms on both sides of the guide rails are respectively provided with second hot air delivery branches, and several second hot air delivery branches are respectively provided with hot air delivery holes facing the guide rails, one end of each second hot air delivery branch is provided with a plug, the inlet end of the hot air delivery main pipe is connected to the outlet end of the first tank body, and a third hot air delivery branch is respectively provided between the end of each second hot air delivery branch away from the plug and the outlet end of the hot air delivery main pipe, and each third hot air delivery branch is respectively provided with a second regulating valve.

[0011] Preferably, the number of the guide rails is two, the extension direction of the two guide rails is parallel to the central axis of the through cavity, a number of rail cars are provided on the two guide rails, and the several rail cars are distributed at intervals on the two guide rails. A wire rope is provided between two adjacent rail cars, and winches are respectively provided at both ends of the inner cavity between the two guide rails. The number of winches is two, each winch is connected to the adjacent rail car, and the axis between the two winches is parallel to the extension direction of the guide rails.

[0012] Preferably, a gas flow sensor is provided on the hot air delivery main pipe between the first hot air delivery branch pipe and the first heat exchanger, the first hot air delivery branch pipe and the first air delivery pipe.

[0013] The beneficial effects of the present invention are as follows: first, the present invention uses the air filtered by the self-cleaning air filter to be transported to the first heat exchanger cold source channel and the exhaust gas continuously transported to the first heat exchanger heat source channel to be adsorbed and discharged for heat exchange, thereby fully utilizing the heat of the exhaust gas discharged outward through the first heat exchanger heat source channel. The heated air is discharged through the first heat exchanger heat source channel and sent into the hot air transport main pipe and combined with the exhaust gas participating in the circulation and then heated by the electric heater, thereby increasing the temperature of the airflow entering the inlet end of the electric heater, thereby reducing the workload of the electric heater, and thereby reducing the overall energy consumption of this product, which is suitable for large-scale promotion and application.

[0014] Secondly, the hot air delivery main pipe of the utility model is provided with a second fan, a second temperature sensor, an electric heater and an air mixer in sequence along the direction from close to the drying room to away from the drying room. The air mixer includes a first tank body and an air supply branch pipe, an air guide cone and a spiral blade arranged in the first tank body in sequence along the direction from the inlet end to the outlet end of the first tank body, so as to facilitate the airflow delivered from the inlet end of the first tank body and the airflow delivered from the air supply branch pipe to be fully mixed by the air guide cone and the spiral blade to form an airflow with relatively uniform temperature, which is then delivered to the electric heater for heating to form a heated airflow with relatively uniform temperature.

[0015] Finally, a second online chromatograph is provided on the first tail gas delivery pipe of the present invention; installation of the second online chromatograph facilitates feedback of component parameters.

[0016] The utility model has the advantages of simple structure, convenient operation, ingenious design, greatly improved work efficiency, good social and economic benefits, and is a product that is easy to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the present utility model.

[0018] Figure 2 for Figure 1 A partially enlarged schematic diagram of detail A.

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model. DETAILED DESCRIPTION

[0020] like Figures 1 to 3As shown, a drying device comprises a drying room 1, wherein the drying room 1 is provided with a hot air delivery main pipe 2 and a hot air return pipe 3, the circumscribed circle diameter of the top of the inner cavity of the drying room 1 gradually decreases as the height of the drying room 1 increases, and the hot air return pipe 3 is installed on the top of the drying room 1; the hot air return pipe 3 is provided with a first fan 4, a first online chromatograph 5, a first temperature sensor 6, the inlet end of the first hot air delivery branch pipe 7 and the inlet end of the heat source channel of the first heat exchanger 8 in sequence along the direction from close to the drying room 1 to away from the drying room 1, the hot air delivery main pipe 2 is provided with a second fan 9, a second temperature sensor 10, an electric heater 11 and an air mixer in sequence along the direction from close to the drying room 1 to away from the drying room 1, the inlet end of the cold source channel of the first heat exchanger 8 The outlet end is connected to a first air delivery pipe 12, and a self-cleaning air filter 13 is provided on the first air delivery pipe 12. The air mixer includes a first tank body 14 and an air supply branch pipe 15, an air guide cone 16 and a spiral blade 17 arranged in sequence in the first tank body 14 along the inlet end of the first tank body 14 to the outlet end of the first tank body 14. The outlet end of the first tank body 14 is connected to the hot air return pipe 3, the air supply branch pipe 15 is connected to the cold source channel of the first heat exchanger 8, the inlet end of the first tank body 14 is connected to the outlet end of the first hot air delivery branch pipe 7, and the hot air delivery main pipe 2 between the first hot air delivery branch pipe 7 and the first heat exchanger 8, the first hot air delivery branch pipe 7 and the first air delivery pipe 12 are respectively provided with a first regulating valve 18.

[0021] The heat source channel of the first heat exchanger 8 is connected to the inlet end of the heat source channel of the second heat exchanger 19, and the outlet end of the heat source channel of the second heat exchanger 19 is connected to the inlet end of the activated carbon adsorption tank 20. The activated carbon adsorption tank 20 includes a second tank body and an activated carbon layer arranged in the second tank body; the outlet end of the activated carbon adsorption tank 20 is connected to the first exhaust gas delivery pipe 21, and the first exhaust gas delivery pipe 21 is provided with a second online chromatograph 22. Furthermore, the number of the activated carbon adsorption tanks 20 is several, and the inlet end of each activated carbon adsorption tank 20 is respectively provided with the inlet end of the first desorption gas delivery branch pipe 23, and the outlet ends of several first desorption gas delivery branches 23 are provided with second exhaust gas delivery pipes 24, and the second exhaust gas delivery pipe 24 is provided with a third online chromatograph 25. The inlet end of each activated carbon adsorption tank 20 is respectively provided with the outlet end of the second desorption gas delivery branch pipe 26, and the inlet ends of several second desorption gas delivery branches 26 are provided with a third online chromatograph 25. A first adsorption gas delivery pipe 28 is provided at the outlet end of the desorption gas delivery branch pipe 27, the inlet end of each activated carbon adsorption tank 20, and the outlet end of the heat source channel of the second heat exchanger 19. A second adsorption gas delivery pipe 29 is provided between the outlet end of each activated carbon adsorption tank 20 and the inlet end of the first exhaust gas delivery pipe 21. A first stop valve 30 is provided on each of the first desorption gas delivery branch pipe 23, the second desorption gas delivery branch pipe 26, the third desorption gas delivery branch pipe 27, the first adsorption gas delivery pipe 28, and the second adsorption gas delivery pipe 29. This facilitates the continuous adsorption of exhaust gas using multiple activated carbon adsorption tanks 20, thereby improving the continuity of adsorption. Furthermore, a second stop valve 31 is provided on the hot air delivery main pipe 2 between the drying room 1 and the second fan 9. The second stop valve 31 is connected to the hot air delivery main pipe 2 between the second fan 9 and the inlet end of the third desorption gas delivery branch pipe 27. A one-way valve 32 is provided on the first hot air delivery branch pipe 7. This facilitates heating the gas with the electric heater to form desorbed gas, which is then transported to the activated carbon adsorption tank 20 to be analyzed through the third desorbed gas delivery branch pipe 27 .

[0022] The drying room 1 is symmetrically provided with two through cavities 33, and the drying rooms 1 outside the two through cavities 33 are respectively hinged with revolving doors 34, and each revolving door 34 and the drying room 1 are respectively provided with a driving cylinder 35, and guide rails 36 are provided in the two through cavities 33. The drying rooms 1 on both sides of the guide rails 36 are respectively provided with second hot air delivery branches 37, and the number of second hot air delivery branches 37 is at least two. Several second hot air delivery branches 37 are respectively provided with hot air delivery holes 38 facing the guide rails 36, and one end of each second hot air delivery branch pipe 37 is provided with a plug 39. The inlet end of the hot air delivery main pipe 2 is connected to the outlet end of the first tank body 14, and a third hot air delivery branch pipe 40 is respectively provided between the end of each second hot air delivery branch pipe 37 away from the plug 39 and the outlet end of the hot air delivery main pipe 2, and each third hot air delivery branch pipe 40 is respectively provided with a second regulating valve 41. The second hot air delivery branch pipes 37 on both sides of the guide rails 36 continuously deliver hot air to the track guide rails 36 to dry the workpieces in the predetermined drying area. Specifically, there are two guide rails 36, each extending parallel to the central axis of the through-cavity 33. A plurality of rail cars 42 are disposed on the two guide rails 36, spaced apart on the two guide rails 36. A steel wire rope 43 is disposed between adjacent rail cars 42. Two winches 44 are disposed at each end of the inner cavity between the two guide rails 36. Each winch 44 is transmission-connected to an adjacent rail car 42, and the axis between the two winches 44 is parallel to the extension direction of the guide rails 36. Each revolving door 34 has a first through-slot 46 defined at the corresponding position where each guide rail 36 passes. Each revolving door 34 also has a second through-slot 47 defined thereon, with the steel wire rope 43 located within the second through-slot 47. Each rail car 42 can be equipped with a workpiece carrier, and the workpiece to be dried is installed on the workpiece carrier. When the workpiece on a rail car 42 is dried, the hoist 44 drives the rail car 42 to move out of the drying room 1 from one through cavity 33. Under the traction of the wire rope 43, the adjacent rail car 42 carrying another workpiece to be dried enters the drying room 1 from another through cavity 33 for the next drying work.

[0023] Gas flow sensors 45 are installed on the hot air delivery main pipe 2 between the first hot air delivery branch pipe 7 and the first heat exchanger 8, the first hot air delivery branch pipe 7, and the first air delivery pipe 12. Gas flow sensors 45 facilitate feedback of gas flow parameters. Hoist 44 includes a drum, a rotating shaft mounted on the drum, and a bracket mounted on the rotating shaft. A one-way damping bearing is installed between the rotating shaft and the bracket.

[0024] The method of using this product is as follows: Figures 1 to 3 As shown, the following steps are included:

[0025] S1. Install brackets on several rail cars 42, install workpieces to be dried on each of the brackets, drive a winch 44, and drive the winch 44 to move several rail cars 42 simultaneously until one of the rail cars 42 is located in the drying room 1, and then close the revolving doors 34 on both sides of the drying room 1.

[0026] S2. Turn on the first fan 4 and the second fan 9, and transport part of the exhaust gas transported through the first hot air delivery branch pipe 7 and the air transported from the cold source channel of the first heat exchanger 8 to the air mixer for mixing, and then send them to the electric heater 11 for heating, and then transport them to the adjacent area of ​​the workpiece to be dried through the corresponding third hot air delivery branch pipe 40, the second hot air delivery branch pipe 37 and the hot air delivery hole 38, so as to increase the air temperature in the adjacent area of ​​the workpiece to be dried, and then the coating on the workpiece to be dried is continuously dried and the vaporized medium is continuously released into the air in the adjacent area of ​​the workpiece to be dried; the hot air return pipe 3 draws the air in the adjacent area of ​​the workpiece to be dried and moves it into the hot air return pipe 3.

[0027] S3. The exhaust gas entering the hot air reflux pipe 3 is divided into two parts after the first online chromatograph 5 feeds back the component parameters and the first temperature sensor 6 feeds back the temperature parameters, namely the first part of exhaust gas and the second part of exhaust gas. The first part of exhaust gas is transported to the first hot air delivery branch pipe 7 and then sent to the air mixer to form a cycle; the second part of exhaust gas is transported to the heat source channel of the first heat exchanger 8 and the air filtered by the self-cleaning air filter 13 and continuously transported to the cold source channel of the first heat exchanger 8 through the first air delivery pipe 12 for heat exchange. The heat-exchanged air transported outward through the cold source channel of the first heat exchanger 8 is continuously transported to the air mixer, and the second part of exhaust gas transported outward from the heat source channel of the first heat exchanger 8 is transported to the heat source channel of the second heat exchanger 19 and the circulating water continuously transported to the cold source channel of the second heat exchanger 19 for heat exchange, and then transported to the activated carbon adsorption tank 20 in use for adsorption, and then sent to the first exhaust gas delivery pipe 21 for feedback to the second online chromatograph 22 and then discharged.

[0028] S4. When the railcar 42 in the working state reaches the preset drying time, the two revolving doors 34 are opened at the same time, and the winch 44 is driven again to the adjacent railcar 42 to enter the drying room 1. The railcar 42 that has completed the workpiece drying is moved out of the drying room 1. When the temperature of the workpiece being dried drops to a preset range, the workpiece being dried can be removed from the railcar 42.

[0029] S5. Repeat steps S2 to S4 until all the workpieces to be dried installed on the railcars 42 complete the drying process.

[0030] It should also be noted that when this product completes the drying of a batch of several workpieces, the first regulating valve 18 and electric heater 11 on the first hot air delivery branch pipe 7 need to be closed. At this time, the outside air is filtered by the self-cleaning air filter 13 and continuously delivered to the drying room 1 through the hot air delivery main pipe 2, the third hot air delivery branch pipe 40, the second hot air delivery branch pipe 37, and the hot air delivery hole 38, thereby fully replacing the air in the drying room 1. The displaced air is then continuously delivered to the hot air return pipe 3, and after the first online chromatogram 5 feedbacks the component parameters, it is sequentially passed through the heat source channel of the first heat exchanger 8 and the medium continuously supplied to the cold source channel of the first heat exchanger 8. After heat exchange in the heat source channel of the second heat exchanger 19 and the circulating water continuously supplied to the cold source channel of the first heat exchanger 8, it is sent to the activated carbon adsorption tank 20 in the working state for adsorption, and then emptied through the first exhaust gas delivery pipe 21. When the component parameters fed back by the first online chromatogram 5 reach the preset range, the full replacement of the gas in the drying room 1 is completed and the machine can be shut down.

[0031] When the activated carbon adsorption tank 20 in the working state reaches the adsorption capacity, it is necessary to switch the activated carbon adsorption tank 20. Whether the activated carbon adsorption tank 20 in the working state has reached the adsorption capacity can be indirectly fed back through the component parameters fed back by the second online chromatograph 22; the activated carbon adsorption tank 20 in the working state after being switched is in the activated carbon adsorption tank 20 to be desorbed. The activated carbon adsorption tank 20 in the desorption state must complete the regeneration process before the adsorption capacity can be restored and it can be used again. The regeneration process of the activated carbon adsorption tank 20 should be carried out when the product is in the shutdown state. The specific regeneration process is as follows:

[0032] The second blower 9 and electric heater 11 are turned on. The outside air is filtered through the self-cleaning air filter 13 and then delivered to the hot air delivery main pipe 2. After being heated by the electric heater 11, it is delivered to the third desorbed gas delivery branch pipe 27. The third desorbed gas delivery branch pipe 27 then continuously delivers the heated air to the activated carbon adsorption tank 20 in the desorption state, thereby desorbing the organic matter adsorbed in the desorption state. The air, carrying the desorbed organic matter, is then delivered to the second exhaust gas delivery pipe 24. Finally, it is delivered to the catalytic combustion device through the second exhaust gas delivery pipe 24 for catalytic combustion before being exhausted. When the component parameters fed back by the third online chromatograph 25 reach a preset range, the desorption of the activated carbon adsorption tank 20 in the desorption state is completed. At this point, the activated carbon adsorption tank 20 in the desorption state is converted back to the standby state. After the desorption of the activated carbon adsorption tank 20 in the desorption state is completed, the second blower 9 and electric heater 11 are turned off, completing the regeneration process.

[0033] Through this embodiment, the air filtered by the self-cleaning air filter 13 is transported to the cold source channel of the first heat exchanger 8 and the exhaust gas continuously transported to the heat source channel of the first heat exchanger 8 to be adsorbed and discharged for heat exchange, thereby fully utilizing the heat of the exhaust gas discharged outward through the heat source channel of the first heat exchanger 8. The heated air is discharged through the heat source channel of the first heat exchanger 8 and sent into the hot air transport main pipe 2 and combined with the exhaust gas participating in the circulation and then heated by the electric heater 11, thereby increasing the temperature of the airflow entering the inlet end of the electric heater 11, thereby reducing the workload of the electric heater 11, and thereby reducing the overall energy consumption of this product, which is suitable for large-scale promotion and application.

[0034] The embodiments described above are only preferred embodiments of the present invention and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structure, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A drying device, characterized in that: The invention comprises a drying room (1), wherein the drying room (1) is provided with a hot air delivery main pipe (2) and a hot air return pipe (3), wherein the hot air return pipe (3) is provided with a first fan (4), a first online chromatograph (5), a first temperature sensor (6), an inlet end of a first hot air delivery branch pipe (7) and an inlet end of a heat source channel of a first heat exchanger (8) in sequence from a direction close to the drying room (1) to a direction away from the drying room (1), wherein the hot air delivery main pipe (2) is provided with a second fan (9), a second temperature sensor (10), an electric heater (11) and an air mixer in sequence from a direction close to the drying room (1) to a direction away from the drying room (1), wherein the inlet end of the cold source channel of the first heat exchanger (8) is connected with a first air delivery pipe (12), and the first air delivery pipe (12) is provided with A self-cleaning air filter (13), wherein the air mixer comprises a first tank body (14) and an air supply branch pipe (15), an air guide cone (16) and a spiral blade (17) arranged in sequence in the first tank body (14) along the direction from the inlet end of the first tank body (14) to the outlet end of the first tank body (14), the outlet end of the first tank body (14) is connected to the hot air return pipe (3), the air supply branch pipe (15) is connected to the cold source channel of the first heat exchanger (8), the inlet end of the first tank body (14) is connected to the outlet end of the first hot air delivery branch pipe (7), and the hot air delivery main pipe (2) between the first hot air delivery branch pipe (7) and the first heat exchanger (8), the first hot air delivery branch pipe (7) and the first air delivery pipe (12) are respectively provided with a first regulating valve (18).

2. The drying device according to claim 1, characterized in that: The heat source channel of the first heat exchanger (8) is connected to the inlet end of the heat source channel of the second heat exchanger (19), the outlet end of the heat source channel of the second heat exchanger (19) is connected to the inlet end of the activated carbon adsorption tank (20), the outlet end of the activated carbon adsorption tank (20) is connected to the first tail gas delivery pipe (21), and the first tail gas delivery pipe (21) is provided with a second online chromatograph (22).

3. The drying device according to claim 2, characterized in that: The number of the activated carbon adsorption tanks (20) is several, and the inlet end of each activated carbon adsorption tank (20) is respectively provided with the inlet end of the first desorption gas delivery branch pipe (23), the outlet ends of the several first desorption gas delivery branch pipes (23) are provided with the second tail gas delivery pipe (24), and the second tail gas delivery pipe (24) is provided with a third online chromatograph (25), and the inlet end of each activated carbon adsorption tank (20) is respectively provided with the outlet end of the second desorption gas delivery branch pipe (26), and the inlet ends of the several second desorption gas delivery branch pipes (26) are provided with the third desorption gas delivery branch pipe. The outlet end of the activated carbon adsorption tank (27), the inlet end of each activated carbon adsorption tank (20) and the outlet end of the heat source channel of the second heat exchanger (19) are respectively provided with a first adsorption gas delivery pipe (28), the outlet end of each activated carbon adsorption tank (20) and the inlet end of the first tail gas delivery pipe (21) are respectively provided with a second adsorption gas delivery pipe (29), and the first desorption gas delivery branch pipe (23), the second desorption gas delivery branch pipe (26), the third desorption gas delivery branch pipe (27), the first adsorption gas delivery pipe (28) and the second adsorption gas delivery pipe (29) are respectively provided with a first stop valve (30).

4. The drying device according to claim 3, characterized in that: A second stop valve (31) is provided on the hot air delivery main pipe (2) between the drying room (1) and the second fan (9). The second stop valve (31) is connected to the hot air delivery main pipe (2) between the second fan (9) and the inlet end of the third desorption gas delivery branch pipe (27). A one-way valve (32) is provided on the first hot air delivery branch pipe (7).

5. The drying device according to claim 1, characterized in that: The drying room (1) is symmetrically provided with two through cavities (33), and the drying room (1) outside the two through cavities (33) is respectively hinged with a revolving door (34), and each revolving door (34) and the drying room (1) are respectively provided with a driving cylinder (35), and the two through cavities (33) are provided with a guide rail (36), and the drying room (1) on both sides of the guide rail (36) is respectively provided with a second hot air delivery branch pipe (37), and a plurality of the second hot air delivery branch pipes (37) are directed toward the guide rail (36). ) are respectively provided with hot air delivery holes (38) in the direction of the hot air delivery, a plug (39) is provided at one end of each second hot air delivery branch pipe (37), the inlet end of the hot air delivery main pipe (2) is connected to the outlet end of the first tank body (14), a third hot air delivery branch pipe (40) is respectively provided between the end of each second hot air delivery branch pipe (37) away from the plug (39) and the outlet end of the hot air delivery main pipe (2), and each third hot air delivery branch pipe (40) is respectively provided with a second regulating valve (41).

6. The drying device according to claim 5, characterized in that: The number of the guide rails (36) is two, and the extension direction of the two guide rails (36) is parallel to the central axis of the through cavity (33). A plurality of rail cars (42) are arranged on the two guide rails (36), and the plurality of rail cars (42) are spaced apart on the two guide rails (36). A steel wire rope (43) is arranged between two adjacent rail cars (42). A winch (44) is respectively arranged at both ends of the inner cavity between the two guide rails (36). The number of the winch (44) is two, and each winch (44) is connected to the adjacent rail car (42) in a transmission manner. The axis between the two winches (44) is parallel to the extension direction of the guide rail (36).

7. The drying device according to claim 1, characterized in that: A gas flow sensor (45) is provided on each of the hot air delivery main pipe (2) between the first hot air delivery branch pipe (7) and the first heat exchanger (8), the first hot air delivery branch pipe (7), and the first air delivery pipe (12).

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